--- file.py	2010-03-10 13:27:29.000000000 +0300
+++ file.py	2010-03-11 08:58:02.000000000 +0300
@@ -48,7 +48,7 @@
         >>> class MyFile(object):
         ...     contentType='text/plain'
         ...     data="data of file"
-        ...     modified = datetime(2006,1,1,tzinfo=pytz.utc)
+        ...     modified = datetime(2006,1,1, microsecond=12345, tzinfo=pytz.utc)
         ...     def getSize(self):
         ...         return len(self.data)
 
@@ -77,8 +77,19 @@
         >>> view = FileTestView(aFile,request)
         >>> view.show()
         'data of file'
-        >>> request.response.getHeader('Last-Modified')
-        'Sun, 01 Jan 2006 00:00:00 GMT'
+        >>> lmt = request.response.getHeader('Last-Modified')
+        >>> print lmt
+        Sun, 01 Jan 2006 00:00:00 GMT
+
+        If the "If-Modified-Since" header is set and is equal a 304
+        status is returned and the value is empty.
+
+        >>> request = TestRequest(IF_MODIFIED_SINCE=lmt)
+        >>> view = FileTestView(aFile,request)
+        >>> view.show()
+        ''
+        >>> request.response.getStatus()
+        304
 
         If the "If-Modified-Since" header is set and is newer a 304
         status is returned and the value is empty.
@@ -86,7 +97,6 @@
         >>> modified = datetime(2007,12,31,tzinfo=pytz.utc)
         >>> modHeader = zope.datetime.rfc1123_date(zope.datetime.time(modified.isoformat()))
         >>> request = TestRequest(IF_MODIFIED_SINCE=modHeader)
-
         >>> view = FileTestView(aFile,request)
         >>> view.show()
         ''
@@ -114,7 +124,7 @@
             try:    mod_since=long(zope.datetime.time(header))
             except: mod_since=None
             if mod_since is not None:
-                if lmt <= mod_since:
+                if long(lmt) <= mod_since:
                     self.request.response.setStatus(304)
                     return ''
         self.request.response.setHeader('Last-Modified',